a$)$ The table below shows the performance of two shares A and $B$ under four

different economic conditions and their associated probabilities of occurrence:

Calculate:

i$)$ The expected rate of return for shares A and B$.(6$mks$)$

ii$)$ The standard deviation of the returns for shares A and B$.(8$mks$)$

iii$)$ The coefficient of variation of returns for shares A and B$.(4$mks$)$

iv$)$ Advise an investor on the preferred share. $(2$mks$)$